Double trouble - powdery mildew on apple and another plant

There are two apple trees like this (one infected the other one although they are some space appart). They were first inside then I put them on the balcony so they don't infect any plants inside.

It looks to me like powdery mildew.

Am I right?

The first treatment I had tried was a copper based fungicide (blue color). Something like copper-sulfate, I don't remember. Did not really work.I tried treating with the milk-water mix and it did seem to work but came back a few days later.

What can I do? Help!!

Second plant:

Plant has always been outside and developped recently this thing which looks like wool balls.I suppose it is mealybug, again, am I right?

Re: Double trouble

Re: Double trouble - powdery mildew on apple and another pla

Mon May 18, 2015 10:57 am

Hi! I updated the subject of the thread so hopefully it will catch more member's attention.

First one definitely looks like powdery mildew. This is on an apple tree? Is it in a container? It's impotant to repeat the treatment after rain, etc. washes it off especially with chemical sprays. Though not as critical for the lactobacillus in the milk spray because they will stick on by themselves, it should be repeated once a week during the humid/muggy fungal disease prone season. Make sure to spray both top and underside of the leaves.

Apple trees should not be kept indoors, btw.

What is the second plant? I think those fuzzy things look like either mealy bugs of wooly aphids. Try touching them with cotton swab dipped in alcohol. Mealy bugs are red under their wooly waxy coating and will rub off. Wooly aphids spin mor cottony material until it looks like fluffy pillow stuffing got caught in the plant -- usualky underneath the leaves.

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